23 Fig.6 Dibromochloromethane, 10.8 µg/L
Dibromochloromethane LMS 98
Dibromochloromethane NIST20
cis-1,2-Dichloroethylene, 0.2 µg/L
cis-1,2-Dichloroethylene LMS 71
cis-1,2-Dichloroethylene NIST20
Fig.6 (continued) Methyl tert-butyl ether, 0.08 µg/L
Methyl tert-butyl ether LMS 56
Methyl tert-butyl ether NIST20
[C] [B] References
1. US EPA Method 524.2: Successful Measurement of Purgeable Organic Compounds in Drinking Water by Agilent 8860/5977B GC/MSD. Agilent Technologies application note, publication number 5994-0833EN, 2019.
2. Improved Volatiles Analysis Using Static Headspace, the Agilent 5977B GC/MSD, and a High-Effi ciency Source. Agilent Technologies application note, publication number 5991-6539EN, 2016.
3. Fast Volatile Organic Compound Analysis of Drinking Water Using the Agilent 8697 Headspace Sampler in Tandem with Intuvo 9000 GC and 5977B GC/MSD. Agilent Technologies application note, publication number 5994-4449EN, 2021.
4. Agilent Inert Plus HydroInert GC-MS System: Applying H2 Carrier Gas to Real World GC-MS Analyses. Agilent Technologies technical overview, publication number 5994-4889EN, 2022.
About the Authors Tetrachloroethylene, 0.05 µg/L [D]
Tetrachloroethylene LMS 39 (below cutoff)
Bruce Quimby is a Senior Applications Scientist in the Mass Spectrometry Division of Agilent Technologies, located in Wilmington, Delaware. He received a PhD in analytical chemistry from the University of Massachusetts (Amherst) in 1980 and a bachelor’s degree in chemistry from Mansfi eld State College (PA) in 1974. He has been at Agilent Technologies since 1979, working the fi rst 10 years in research and development. He has authored or co-authored 18 journal articles and 16 patents in the fi eld of gas chromatography and mass spectrometry. He is currently working in GC/MS applications in multiple areas.
Tetrachloroethylene NIST20
Figure 6. Quantifi er ion extracted chromatograms from the SIM run and corresponding deconvoluted spectra from scan runs of the Eastern PA tap water sample
Anastasia Andrianova is a GC/MS Applications Scientist in the Mass Spectrometry Division of Agilent Technologies, located in Wilmington, Delaware. She received a PhD in analytical chemistry from the University of North Dakota (Grand Forks) in 2017 and a masters’ degree in analytical chemistry from the Moscow State University in 2014. Anastasia has been at Agilent Technologies since 2018. She has authored or co- authored over 30 journal articles and application notes, and 1 patent in the fi eld of analytical chemistry, focusing on chromatography and mass spectrometry. Anastasia is currently working in GC/MS applications in multiple areas with a focus on food and environmental analysis.
Table 4. Results from analysis of tap water samples. [A]
ICP-MS Supplies Compatible with Leading OEM Equipment Alpha Resources LLC, the leading aftermarket supplier of consumables and reference materials, has expanded their Thermo Fisher Scientifi c®
compatible products to include supplies for
inductively coupled plasma mass spectrometry (ICP-MS) analysis. In-stock supplies include both sample cone and skimmer cone options compatible with numerous models of Thermo Fisher ICP- MS analysis equipment.
This product expansion follows in the wake of Alpha’s recent addition of optical emission spectroscopy (OES) supplies compatible for Thermo Fisher Scientifi c analysis equipment. Thermo Fisher is a leading OEM for laboratory equipment in many industrial sectors, including the inorganic markets which Alpha Resources has historically served.
“Alpha’s customers have expressed an interest in alternatives to OEMs’ aftermarket ICP-MS supplies. The cones and skimmers used for ICP-MS analysis are a challenge as the precision machining required is exacting - or the background and sensitivity counts could negatively impact the analysis. Ensuring that Alpha could offer cones and skimmers which will perform comparably to an OEM product while still providing a cost savings has been a long-term project,” noted Ken Mantei, Director of Operations, at Alpha Resources. “Customers trust the Alpha Resources’ name to provide high quality aftermarket analysis supplies, and our new ICP-MS cones and skimmers deliver on that promise.”
As with all Alpha products, the high-quality lab supplies are compatible for aftermarket use in the specifi ed ICP-MS analysers. More information online:
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